#coding=utf-8
f = open('openme.txt',"r")

content = f.readlines()

i = 1
for temp in content:
    print("%d:%s"%(i,temp))
    i += 1

f.close()
# f = open('openme.txt',"r")

# content = f.readline()
# print("1:%s"%content)

# content = f.readline()
# print("2:%s"%content)

# f.close()